[TrunkCom] GRE folks

[Wayne M H]

Since the Moto radios receive all MSELs then I'm led to believe the CC
at least uses an aliasing feature for patches and MSELs. With that in
mind there has to be a TG that was "+7." When a patch or MSEL is
initiated there is a Supergroup, which is the group that is either +7
or +3. In this case the Supergroup is not 57360 (or 57712) so it has
to be another TG that's involved in the MSEL.

It's long been a pet peeve of mine that the Trunk Trackers do not
correctly follow Patches or MSELs. It's something easy to include. All
the scanner has to do is look for the "alias" messages, build a
temporary table of what TGs are involved, switch the scanner to the
Supergroup, and broadcast any audio that appears on the TGs in the
table. This is essentially how a Moto radio would do it.

Who knows, maybe the GRE will do it. It does seem to take a lot of
past issues into consideration.

-Wayne



On Wed, 18 Jun 2003 16:32:04 -0500, "Todd Hartzel" <toddh@brick.net>
wrote:

>Greetings All,
>      To the folks at GRE working on the PRO-96.  To advise
>you.   Here in St Louis, Mo the 'STATUS BIT' features don't
>exactly work in the normal manner here.   Example:
>
>I 'HOLD' monitor District 1 & 2 (Only).(STATUS BIT mode 'ON')
>Say the 'District 1 & 2' Dispatcher goes 'All Points'.  1 & 2
>talkgroup is  57360.  So, when the 1 & 2 Dispatcher goes
>out with an APB, you'd expect that 57367 would come out
>over the data channel, right?  Well, NOT here in St Louis.
>
>It could be any of the Dispatch talkgroups+7 (the status
>bit).  One thing I can tell you.  Even though our trunktrackers
>do not receive it correctly.  The actual system radios:
>
>- stx-800s (most) & XTS-3000s (few)
>
>They receive them correctly (everytime). The officer's radios
>receive all APBs correctly.  Its only our trunktrackers that
>do not.  So the 'STATUS BIT' mode on the Uniden models
>is completely useless for us in St Louis, Mo
>=20
>Also, using the same example above, monitoring 1 & 2.  Dist
>1 & 2  is quiet, not much going on (talkgroup not active).  Then
>the District 4 & 5 dispatcher goes out with an APB.  With our
>Trunktrackers, we never hear the APB from 4 & 5.  The APB
>goes out with the talkgroup ID of 57719 (which is the INFO A
>talkgroup+7)  But, at the same time.  All officers with XTS-3000=20
>& STX-800 radios receive the broadcast just fine.  (Not a=20
>selective APB ; we very rarely, if ever do selective APBs)
>
>This is a very prominent problem.  Occuring 3 out of every 4=20
>times, day or night, round the clock 24/7. =20
>
>Conclusion, the officers radios receive the APBs just fine.  Its
>only our Trunktrackers that do not.  Before the PRO-96 ships
>later this year, could someone from GRE investigate this matter.
>I hope the problem is not unique.  I do not consider the St Louis
>City Police Type II Motorola TRS to be that special, or differant
>from all other systems.  Obviously, the problem lies in our=20
>trunktrackers, not the police radios.  Our scanners are ignoring=20
>something in the Data Channel's data stream.=20